private void MakePieVisible(PiePiece pClickedPiePiece)
{
PiePiece lLastClickedPiePiece = PieList.FirstOrDefault(x => x.PushOut > 0.0);
if (lLastClickedPiePiece != null)
{
MakePieInvisible(lLastClickedPiePiece);
}
DoubleAnimation lShow = new DoubleAnimation(BackgroundPiece.Radius * 0.04, new Duration(TimeSpan.FromMilliseconds(IsAnimate ? 200 : 0)));
pClickedPiePiece.BeginAnimation(PiePiece.PushOutProperty, lShow);
}
private void AnimateAngle(PiePiece pPiePiece, DependencyProperty pDependencyProperty, double pAngle, EventHandler pEventHandler = null)
{
double oldAngle = (double)pPiePiece.GetValue(pDependencyProperty);
DoubleAnimation animation = new DoubleAnimation(oldAngle, pAngle, new Duration(TimeSpan.FromMilliseconds(IsAnimate ? 500 : 0)), FillBehavior.HoldEnd);
animation.EasingFunction = EasingFunction;
if (pEventHandler != null)
{
animation.Completed += pEventHandler;
}
pPiePiece.BeginAnimation(pDependencyProperty, animation);
}
/// <summary>
/// Handles the event which occurs when the selected item has changed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void CollectionViewCurrentChanged(object sender, EventArgs e)
{
CollectionView collectionView = (CollectionView)sender;
if (collectionView != null && collectionView.CurrentPosition >= 0 && collectionView.CurrentPosition <= piePieces.Count)
{
PiePiece piece = piePieces[collectionView.CurrentPosition];
DoubleAnimation a = new DoubleAnimation();
a.To = 10;
a.Duration = new Duration(TimeSpan.FromMilliseconds(500));
piece.BeginAnimation(PiePiece.PushOutProperty, a);
}
}
/// <summary>
/// Handles the MouseUp event from the individual Pie Pieces
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void PiePieceMouseUp(object sender, MouseButtonEventArgs e)
{
CollectionView collectionView = (CollectionView)CollectionViewSource.GetDefaultView(this.DataContext);
//Индекс для определения текущей позиции
int collectionIndex = collectionView.CurrentPosition;
if (collectionView == null)
{
return;
}
PiePiece piece = sender as PiePiece;
if (piece == null)
{
return;
}
// Выбираем нужный кусок пирога
int index = (int)piece.Tag;
if (collectionIndex == index)
{
if (collectionView != null && collectionView.CurrentPosition >= 0 && collectionView.CurrentPosition <= piePieces.Count)
{
DoubleAnimation a = new DoubleAnimation();
if (piece.PushOut == 10)
{
a.To = 0;
a.Duration = new Duration(TimeSpan.FromMilliseconds(300));
}
else
{
a.To = 10;
a.Duration = new Duration(TimeSpan.FromMilliseconds(500));
}
piece.BeginAnimation(PiePiece.PushOutProperty, a);
}
}
else
{
collectionView.MoveCurrentToPosition(index);
}
}
private void AddNewPiePiece(FingerEventArgs finger)
{
DispatcherTimer startTimer = new DispatcherTimer();
startTimer.Tick += new EventHandler(startTimer_Elapsed);
startTimer.Interval = TimeSpan.FromMilliseconds(this._holdTime);
_holdFingerList.Add(finger.FingerID, startTimer);
_holdFingerPositionList.Add(finger.FingerID, finger.Position);
PiePiece pie = new PiePiece();
pie.Radius = 24;
pie.InnerRadius = 12;
pie.Fill = Brushes.Beige;
pie.Opacity = .8d;
Canvas.SetLeft(pie, finger.Position.X);
Canvas.SetTop(pie, finger.Position.Y);
PopupStage.Children.Add(pie);
pie.BeginAnimation(PiePiece.WedgeAngleProperty, new DoubleAnimation(360, new Duration(TimeSpan.FromMilliseconds(this._holdTime))));
startTimer.Tag = pie;
startTimer.Start();
}
private void MakePieInvisible(PiePiece pClickedPiePiece)
{
DoubleAnimation lHide = new DoubleAnimation(0, new Duration(TimeSpan.FromMilliseconds(IsAnimate ? 200 : 0)));
pClickedPiePiece.BeginAnimation(PiePiece.PushOutProperty, lHide);
}